Microstructure of Interpass Rolled Wire plus Arc Additive Manufacturing Ti-6Al-4V Components
Microstructure of Interpass Rolled Wire plus Arc Additive Manufacturing Ti-6Al-4V Components
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DOI：
10.1007/s11661-015-3172-1
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发表时间：
2015-12-01
影响因子：
2.8
通讯作者：
Meyer, Jonathan
中科院分区：
文献类型：
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作者：
Martina, Filomeno;Colegrove, Paul A.;Meyer, Jonathan
机械性能各向异性是限制添加制造(AM)Ti-6Al-4V组件工业化应用的问题之一。为了改善沉积层的组织，对高压道次间轧制的效果进行了评价，并对平板轧辊和异型轧辊进行了比较。显微组织从穿过成分的大柱状先前的贝塔晶转变为尺寸在56~139微米之间的等轴晶。魏氏α片层尺寸的重复变化保持不变；然而，随着轧制，总体尺寸减小。“基础研究”被用来洞察由于变形和沉积相结合而发生的微观结构变化。高压道次间轧制可以克服AM的许多缺点，潜在地有助于该工艺的工业化实施。(C)提交人(S)2015年。本文以开放获取方式在Springerlink.com上发布
Mechanical property anisotropy is one of the issues that are limiting the industrial adoption of additive manufacturing (AM) Ti-6Al-4V components. To improve the deposits' microstructure, the effect of high-pressure interpass rolling was evaluated, and a flat and a profiled roller were compared. The microstructure was changed from large columnar prior beta grains that traversed the component to equiaxed grains that were between 56 and 139 mu m in size. The repetitive variation in Widmanstatten alpha lamellae size was retained; however, with rolling, the overall size was reduced. A ''fundamental study'' was used to gain insight into the microstructural changes that occurred due to the combination of deformation and deposition. High-pressure interpass rolling can overcome many of the shortcomings of AM, potentially aiding industrial implementation of the process. (C) The Author(s) 2015. This article is published with open access at Springerlink.com